Collapsible enclosure



FIG. 1 is a perspective view of the collapsible enclosure showing my new design;

FIG. 2 is a front view of the collapsible enclosure of FIG. 1;

FIG. 3 is a rear plan view of the collapsible enclosure of FIG. 1;

FIG. 4 is a right side plan view of the collapsible enclosure of FIG. 1;

FIG. 5 is a top plan view of the collapsible enclosure of FIG. 1; and,

FIG. 6 is a bottom view of the collapsible enclosure of FIG. 1. 

The ornamental design for a collapsible enclosure, as shown in the attached drawings. 